Figure 1. Schematic representation of the processes in a photocatalyst. a. light excitation, b. electron-hole-pair, c. redox reactions at the activated semiconductor

From

Photoreforming of Biomass - Producing Hydrogen from Sugar

Julian Venzlaff, Claudia Bohrmann-Linde

World Journal of Chemical Education. 2021, 9(4), 130-135 doi:10.12691/wjce-9-4-5